Modify Aviary to default to basic optimizers (like SLSQP) across the board

[jkirk5]

Desired capability or behavior.

In examples and documentation, we frequently make use of the IPOPT and SNOPT optimizers. We need to make sure all introductory documentation examples and in-source-code examples we expect users to interact with can be run without pyoptsparse. Advanced examples might be ok to leave as-is, but should be called out in documentation that they require pyoptsparse.

All Aviary functions should default to SLSQP so L1 users can easily execute code without needing additional arguments.

Is your feature request related to a problem? Please describe.

No response

Associated Bug Report

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